This is a note to let you know that I've just added the patch titled
ACPI/PCI: pci_link: Include PIRQ_PENALTY_PCI_USING for ISA IRQs
to the 4.8-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
acpi-pci-pci_link-include-pirq_penalty_pci_using-for-isa-irqs.patch
and it can be found in the queue-4.8 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 98756f5319c64c883caa910dce702d9edefe7810 Mon Sep 17 00:00:00 2001
From: Sinan Kaya <okaya@xxxxxxxxxxxxxx>
Date: Mon, 24 Oct 2016 00:31:32 -0400
Subject: ACPI/PCI: pci_link: Include PIRQ_PENALTY_PCI_USING for ISA IRQs
From: Sinan Kaya <okaya@xxxxxxxxxxxxxx>
commit 98756f5319c64c883caa910dce702d9edefe7810 upstream.
Commit 103544d86976 ("ACPI,PCI,IRQ: reduce resource requirements")
replaced the addition of PIRQ_PENALTY_PCI_USING in acpi_pci_link_allocate()
with an addition in acpi_irq_pci_sharing_penalty(), but f7eca374f000
("ACPI,PCI,IRQ: separate ISA penalty calculation") removed the use
of acpi_irq_pci_sharing_penalty() for ISA IRQs.
Therefore, PIRQ_PENALTY_PCI_USING is missing from ISA IRQs used by
interrupt links. Include that penalty by adding it in the
acpi_pci_link_allocate() path.
Fixes: f7eca374f000 (ACPI,PCI,IRQ: separate ISA penalty calculation)
Signed-off-by: Sinan Kaya <okaya@xxxxxxxxxxxxxx>
Acked-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Tested-by: Jonathan Liu <net147@xxxxxxxxx>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/acpi/pci_link.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/drivers/acpi/pci_link.c
+++ b/drivers/acpi/pci_link.c
@@ -608,6 +608,10 @@ static int acpi_pci_link_allocate(struct
acpi_device_bid(link->device));
return -ENODEV;
} else {
+ if (link->irq.active < ACPI_MAX_ISA_IRQS)
+ acpi_isa_irq_penalty[link->irq.active] +=
+ PIRQ_PENALTY_PCI_USING;
+
printk(KERN_WARNING PREFIX "%s [%s] enabled at IRQ %d\n",
acpi_device_name(link->device),
acpi_device_bid(link->device), link->irq.active);
Patches currently in stable-queue which might be from okaya@xxxxxxxxxxxxxx are
queue-4.8/acpi-pci-pci_link-penalize-sci-correctly.patch
queue-4.8/acpi-pci-irq-assign-isa-irq-directly-during-early-boot-stages.patch
queue-4.8/acpi-pci-pci_link-include-pirq_penalty_pci_using-for-isa-irqs.patch
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